/**
* @copydoc INTNETTRUNKFACTORY::pfnCreateAndConnect
*/
static DECLCALLBACK(int) vboxNetAdpFactoryCreateAndConnect(PINTNETTRUNKFACTORY pIfFactory, const char *pszName,
PINTNETTRUNKSWPORT pSwitchPort, uint32_t fFlags,
PINTNETTRUNKIFPORT *ppIfPort)
{
PVBOXNETADPGLOBALS pGlobals = (PVBOXNETADPGLOBALS)((uint8_t *)pIfFactory - RT_OFFSETOF(VBOXNETADPGLOBALS, TrunkFactory));
PVBOXNETADP pThis;
int rc;
LogFlow(("vboxNetAdpFactoryCreateAndConnect: pszName=%p:{%s} fFlags=%#x\n", pszName, pszName, fFlags));
Assert(pGlobals->cFactoryRefs > 0);
AssertMsgReturn(!fFlags,
("%#x\n", fFlags), VERR_INVALID_PARAMETER);
/*
* Find instance, check if busy, connect if not.
*/
pThis = vboxNetAdpFind(pGlobals, pszName);
if (pThis)
{
if (vboxNetAdpCheckAndSetState(pThis, kVBoxNetAdpState_Available, kVBoxNetAdpState_Transitional))
{
vboxNetAdpRetain(pThis);
rc = vboxNetAdpConnectIt(pThis, pSwitchPort, ppIfPort);
vboxNetAdpSetStateWithLock(pThis, RT_SUCCESS(rc) ? kVBoxNetAdpState_Connected : kVBoxNetAdpState_Available);
}
else
rc = VERR_INTNET_FLT_IF_BUSY;
}
else
rc = VERR_INTNET_FLT_IF_NOT_FOUND;
return rc;
}
/**
* @copydoc INTNETTRUNKIFPORT::pfnXmit
*/
static DECLCALLBACK(int) vboxNetAdpPortXmit(PINTNETTRUNKIFPORT pIfPort, PINTNETSG pSG, uint32_t fDst)
{
PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
int rc = VINF_SUCCESS;
/*
* Input validation.
*/
AssertPtr(pThis);
AssertPtr(pSG);
Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
Log(("vboxNetAdpPortXmit: outgoing packet (len=%d)\n", pSG->cbTotal));
/*
* Do a retain/busy, invoke the OS specific code.
*/
RTSpinlockAcquire(pThis->hSpinlock);
if (vboxNetAdpGetState(pThis) != kVBoxNetAdpState_Active)
{
RTSpinlockRelease(pThis->hSpinlock);
Log(("vboxNetAdpReceive: Dropping incoming packet for inactive interface %s.\n",
pThis->szName));
return VERR_INVALID_STATE;
}
vboxNetAdpRetain(pThis);
vboxNetAdpBusy(pThis);
RTSpinlockRelease(pThis->hSpinlock);
rc = vboxNetAdpPortOsXmit(pThis, pSG, fDst);
vboxNetAdpIdle(pThis);
vboxNetAdpRelease(pThis);
return rc;
}
/**
* @copydoc INTNETTRUNKIFPORT::pfnWaitForIdle
*/
static DECLCALLBACK(int) vboxNetAdpPortWaitForIdle(PINTNETTRUNKIFPORT pIfPort, uint32_t cMillies)
{
int rc;
PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
/*
* Input validation.
*/
AssertPtr(pThis);
Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
AssertReturn(vboxNetAdpGetStateWithLock(pThis) >= kVBoxNetAdpState_Connected, VERR_INVALID_STATE);
/*
* Go to sleep on the semaphore after checking the busy count.
*/
vboxNetAdpRetain(pThis);
rc = VINF_SUCCESS;
while (pThis->cBusy && RT_SUCCESS(rc))
rc = RTSemEventWait(pThis->hEventIdle, cMillies); /** @todo make interruptible? */
vboxNetAdpRelease(pThis);
return rc;
}
/**
* Checks if receive is possible and increases busy and ref counters if so.
*
* @param pThis The instance.
*/
DECLHIDDEN(bool) vboxNetAdpPrepareToReceive(PVBOXNETADP pThis)
{
bool fCanReceive = false;
/*
* Input validation.
*/
AssertPtr(pThis);
Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
RTSpinlockAcquire(pThis->hSpinlock);
if (vboxNetAdpGetState(pThis) == kVBoxNetAdpState_Active)
{
fCanReceive = true;
vboxNetAdpRetain(pThis);
vboxNetAdpBusy(pThis);
}
RTSpinlockRelease(pThis->hSpinlock);
Log(("vboxNetAdpPrepareToReceive: fCanReceive=%d.\n", fCanReceive));
return fCanReceive;
}
/**
* @copydoc INTNETTRUNKIFPORT::pfnRetain
*/
static DECLCALLBACK(void) vboxNetAdpPortRetain(PINTNETTRUNKIFPORT pIfPort)
{
PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
vboxNetAdpRetain(pThis);
}